PT2136953E - Cutting tool and method of assembling a cutting tool - Google Patents

Description

DESCRIPTION

Cutting tool and cutting tool assembly method

FIELD OF THE INVENTION The present invention relates to a cutting tool according to the preamble of claim 1 and to a method for assembling a cutting tool. Such a cutting tool and such a process are known from FR 2 851 738 A.

BACKGROUND OF THE INVENTION

Cutting devices utilizing cartridges that support inserts or cassettes are known. Some examples of patents relating to these cutting devices are US5567092, EP0624415, US6254310 and US4547100. U.S. Patent 4,592,689 relates to a rotary cutting device for securing replaceable cutting inserts. The cutting device includes a cylindrical bore having an axis generally radially disposed that makes an acute angle with the cutting face of the insert, thereby forming a wedge-shaped part in the holder between the insert support face and the axis of the insert hole. A cylindrical locking member is received in the bore. An insert locking screw threads engage the locking element. The wedge-shaped portion of the support causes increased tension in the locking screw during rotation of the cutting device at high rotational speeds due to the centrifugal forces applied at the cutting insert and the cylindrical locking member. EP 0 440 253, corresponding to US 5,160,228, relates to a cutting tool including a tool body having a plurality of mounting recesses formed at its end. Each of the mounting recesses has a mounting face mounted respectively on its bottom. The mounting face has a first threaded bore formed therein. Each of a plurality of inserts is disposed respectively on the mounting face and secured under pressure on the mounting face by means of a securing screw threaded in the first threaded bore. The cutting tool is characterized by having a plurality of zones of reduced hardness, respectively formed under the mounting face within the tool body, each of the zones of reduced hardness having the first threaded bore therein formed and a hardness less than the hardness of the tool. tool body. In one embodiment, the zones of least hardness are formed by embedding a right cylindrical column in a right bore with round cross-section formed under each mounting face of the tool body.

SUMMARY OF THE INVENTION The object of the present invention is to provide a connection system for a cutting tool comprising a cutting element, a pin, a cutting device body, and a method of assembling the cutting tool.

According to the invention, there is provided a cutting tool according to claim 1 and a method of assembling the cutting tool according to claim 2. Other advantageous embodiments are disclosed in the dependent claims. The present invention relates specifically to a cutting tool with a cutting element attached to a cutting device body, optionally a rotary cutting device body or, alternatively, a non-rotating cutting device body. A pin is provided having preferably a longitudinal axis, the pin comprising at least one first connecting hole and a second connecting hole. Typically, both of the holes extend generally radially and are at least approximately parallel to each other. In addition, there is provided a fastening screw having a fastening section which is particularly shaped to hold in a manner that the cutting element can be released to the cutting device body. The securing screw has a first connecting section which is formed to be releasably secured in the first pin connection hole. There is provided a set screw having a setting section which is formed to regulate the position of the cutter relative to the cutter body. The adjusting screw has a second attachment section which is formed to be releasably secured in the second pin attachment hole. The invention also preferably relates to a cutting tool in which an element made in a first material having a first hardness is connected to a body made of a second material having a hardness less than the first hardness. The cutting tool comprises a pin having a longitudinal axis, the pin comprising at least a first attachment hole and being made of a third material having a hardness greater than the hardness of the second material of the body. A fastening screw has a fastening section which is formed to firmly connect the member to the body, and has a first connecting section which is formed to be firmly attached to the first pin connection hole. Preferably, the member is a cutting member and the body is a cutting device body which may be either a rotatable cutting body or, alternatively, a non-rotating cutting body.

The pin holes on the pin may be threaded holes and the connecting sections of the securing screw and adjusting screw may be threaded sections. In another embodiment, the securing screw and the adjusting screw may be secured in a releasable manner through a bayonet connection or, in yet another embodiment, through a hook connection. The pin optionally has a generally cylindrical outer shape. However, an oval, polygonal shape, or any other suitable shape may also be provided. The pin is preferably divided into at least two segments which are joined, either firmly or in a releasable manner, optionally resiliently, from each other or optionally separated from one another. In one embodiment in which the pin segments are separated, it is optional to provide engaging means for rotary engagement of the two segments. These engaging means may be removable in an axial direction, such as a claw engagement. A key and groove coupling is also possible. This would allow a rotary engagement in case the outer segment rotates, so the inner segment could also rotate to align the holes provided in both segments. The pin may have at least one recess or at least one groove between the connecting holes. The pin may alternatively have a connecting element between the two segments, made of another material which is more elastic than the material of which the pin is made. Such an elastic intermediate member could be any suitable plastic or rubber material that can be bonded between two segments. The pin further optionally has at least one torque transmitting device provided on an end face to rotate the pin and align the securing holes with the cutter body. Optionally, the end face may further comprise an indicator indicating the direction of the attachment hole and the pin adjustment hole. The fastening section of the fastening screw, optionally being a tightening screw, may be a slanting head engaging a correspondingly securing hole in the cutting member, for securing the cutting member to the cutting device body.

Further optionally, the adjustment section of the adjusting screw, optionally being a regulation pin, may be a slanting head engaging a correspondingly inclined portion of a cutting element adjustment section for adjusting the cutting member at a position defined in adjustment to the cutting device body.

If desired, the cutting tool may further comprise a friction bolt which may be a friction bolt and the bolt further comprises a third bore or bore with friction. Typically, the third bore is at least approximately parallel to the second bore. The cutter member of the cutting tool comprises a securing hole to allow a securing screw to extend through the cutting member and to enable an attachment of a head of the securing screw. The cutting member further has at least one inclined portion to enable engagement of a set screw to suitably adjust the cutting member relative to the cutting device body.

Further, the inclined portion described above is preferably provided in a concave recess portion which is located at the opposite end of a cutting section of the cutting member.

Further preferably, the cutting member is a cutting insert, a cutting plate or a cartridge for a cutting insert or a cutting plate.

Preferably, the cartridge has a cartridge receptacle for a cutting insert or a cutting plate. The cutting tool body of the cutting tool may be made of a light alloy, such as an aluminum alloy, still preferably a high strength aluminum alloy. In the cutting device body, at least one pin bore is provided on a front face of the cutting body to enable the pin described above to be inserted into the pin bore from the front face. Each of the at least one pin bore is associated with a cutting device receptacle, to enable the cutting member to be attached to the cutting device body. Further, each receptacle is provided with a receptacle attachment aperture from the receptacle to the pin bore.

Typically, the cutting device body is further provided with a receptacle regulation bore from the receptacle to the pin bore.

If desired, the receptacle attachment aperture is a securing hole.

Optionally, the cutting device body is further provided with a bore with friction provided from a peripheral surface of cutting device having generally cylindrical shape up to the pin bore. The invention also relates to a method of assembling a cutting tool. The present invention is particularly advantageous for milling operations at very high speeds, which are preferably performed as finishing steps on upper surfaces of aluminum motor blocks, and lower surfaces of aluminum cylinder heads, as a substitute for precision grinding operations to achieve a very high surface quality finish and a perfect match between the cylinder heads and the engine block. The cutting tool preferably comprises a generally cylindrical cutting device body preferably made of aluminum and a plurality of axially adjustable cutting elements, optionally cartridges, each located in a corresponding receptacle formed in the cutter body and opening axially outwardly and forwardly to a cutting device face and radially outwardly to a peripheral tool surface. In an axial section perpendicular to the cartridge and the receptacle, the cartridge and the receptacle preferably have corresponding trapezoidal cross-sections tapering outwardly, while axially extending, generally parallel to the axis of longitudinal rotation of the cutting tool and assuming the swallow tail shape.

Each cartridge is optionally made of steel, and further preferably comprises a front cutout portion and a cartridge body extending rearwardly therefrom and integrally formed therein. The cartridge has a securing hole extending therethrough in which a securing screw extends to threadably engage a threaded fixing hole formed in the pin. The invention has the preferred advantages of providing an aluminum tool body in which the steel cartridges are secured in a releasable manner without using fasteners which engage the aluminum body in any direct manner. Rather than being threaded in a soft aluminum material, the cartridge is secured by a threaded bolt on the steel stud. The pin spreads the load exerted by the screw over a much larger area than would be obtainable by screw threads, thereby reducing the local clamping stresses to a level that the aluminum body can withstand. The pin has another, much more preferred function in which it can rotate about a longitudinal pin axis parallel to a longitudinal tool axis, so that the securing screw securing it to the tool body self-alignes with the direction of the forces thereto, thereby assuming that the fastening screw will withstand most (and preferably only) of the tensile stress, rather than the tensile, shearing and bending stresses that would occur if such a rotational movement ( or alignment) had been avoided. Since the tool is used at very high rotational speeds, minimizing the loads on the fastening screws contributes greatly to the robustness, precision and safety of the cutting tool, and to a higher permissible rotation speed, thereby increasing productivity and the quality of finished products. The cutting portion of the cartridge may have a cutting plate thereat brazed, or a cutting insert attached thereto in a releasable manner. The cutting portion may be a brazed plate or a replaceable insert, and the plate or insert may be made of any suitable material. The plate or insert may also be secured or secured to the cartridge through a number of known processes. The cutting edges of the insert or the plate may be formed, configured or function in any known manner. The cutter body is preferably made of a light alloy or aluminum, and is most preferably intended at very high rotational speeds that can reach 50000-6000 rpm. The event preferably allows for a firm attachment of a cartridge to an insert, or from the insert itself to the cutter body supporting the large centrifugal forces applied thereto during the operation of the cutting tool. The invention has the preferred advantage that there are no threaded surfaces in the cutting device body which limit the life of the cutting tool, in particular in case the cutting device body is made of a light alloy. There is a surface contact with surface between the pin and the pin hole, and between the cartridge and the receptacle. All of the threaded surfaces are on the bolts and the pin, preferably resulting in a simpler arrangement with a considerably longer life of the cutting tool. The pin and the cartridge exert a compressive force on the cutting device body while the screws support the combined voltages. This design allows the cutting device body to be made of a light alloy. This design further allows the cutting device receptacles to be closer together and thus be more closely secured around the perimeter of the body of the cutting device, allowing the cutting tool to take a step closer to a given diameter.

BRIEF DESCRIPTION OF THE DRAWINGS

For a better understanding, the invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of a cutting tool according to a preferred embodiment of the invention; Figure 2 is a side view of the cutting tool shown in Figure 1; Figure 3 is a front view of the cutting tool shown in Figure 1; Figure 4 is a front view of a cutter receptacle shown in Figure 3; Figure 5 is a perspective view of a receptacle of a cutting tool shown in Figure 1, together with a releasably attached pin, cutting element, securing screw and adjusting screw; Figure 6 is an exploded perspective view of the receptacle shown in Figure 5, Figure 7 is a side cross-sectional view of the receptacle, along line VII-VII in Figure 2; Figure 8 is a cross-sectional view along line VIII-VIII of Figure 7; Figure 9 is a cross-sectional view along line IX-IX of Figure 7; Figure 10 is a perspective view of the pin shown in Figure 6; Figure 11 is a side view of the pin shown in Figure 10; Figure 12 is a cross-sectional view of the pin shown in Figure 10, along line XII-XII of Figure 11; Figure 13 is a perspective view of the cutting and insertion member shown in Figure 6; Figure 14 is a front view of the cutting and insertion member shown in Figure 13; Figure 15 is a side view of the cutting and insertion member shown in Figure 13; Figure 16 is a cross-sectional view of the cutter shown in Figure 13 along line XVI-XVI of Figure 15; Figure 17 is a perspective view of the receptacle shown in Figure 6; Figure 18 is! a front view of the receptacle shown in Figure 17; Figure 19 is a front view of the receptacle shown in Figure 18 in conjunction with the concealed locking screw, Figure 20 is a side view of the receptacle shown in Figure 17; Figure 21 is a radial cross-sectional view of the receptacle shown in Figure 17, along line XXI-XXI in Figure 19; Figure 22 is an axial cross-sectional view of the receptacle in the bore of the securing screw, along line XXII-XXII of Figure 21; Figure 23 is an axial cross-sectional view of the receptacle in the securing screw hole, along line XXIII-XXIII in Figure 21; Figure 24 is a perspective view of a split pin according to another embodiment of the invention; Figure 25 is a side view of the split pin shown in Figure 24; Figure 26 is a perspective view of a receptacle of a cutting tool according to another embodiment of the invention; Figure 27 is a perspective view of a receptacle of a cutting tool according to another embodiment of the invention; Figure 28 is a perspective view of a receptacle of a cutting tool shown in Figure 26 or Figure 27, together with a releasably attached pin, a cutting element, a set screw and a set screw. regulation; Figure 29 is a perspective view of a receptacle of a cutting tool according to another embodiment of the invention, together with a releasably attached pin, a cutting element, a set screw, a screw of adjustment and screw with friction; Figure 30 shows the receptacle shown in Figure 29, together with the pin and the friction screw; Figure 31 is a perspective view of the pin and friction screw shown in Figure 30; Figure 32 is a perspective view of the pin shown in Figure 31; and Figure 33 illustrates a cutting tool according to another embodiment of the invention. 12

DETAILED DESCRIPTION OF THE INVENTION

Figures 1, 2 and 3 show the structure of a cutting tool 10 for high speed milling or, more preferably, for milling operations at a very high speed, according to a preferred embodiment of the invention. More specifically, the cutting tool 10 has a cutting device body 13 made of a material having a third hardness. Typically, when used for milling at a very high speed, the cutting device body 13 may be made of aluminum. The cutting device body 13 has a peripheral surface of cutting device having a generally cylindrical shape 11, extending rearwardly from a front face of cutting device 12, coaxially with the longitudinal axis of rotation A. Preferably , a plurality of cutting device receptacles 14 are provided on the outer periphery of the cutting device face 12, the cutting device receptacles 11 optionally opening radially outwardly and axially forward. Each cutting device receptacle preferably houses a cutting member 30 which is made of a material having a first hardness. The cutting member 30 may be made of steel. The cutting member 30 has a cutting portion 31 with at least one cutting edge 32 formed therein. The cutting device receptacle 14 is provided with a pair of tangential receptacle abutment surfaces converging radially outwardly and axially extending 21. The cutting member 30 is provided with a pair of tangential element abutment surfaces converging radially toward off and axially extending portions 22 that marry in size and shape with the tangential abutment surfaces 21 of receptacle 21. Thus, the cutter receptacles 14 and respective cutter member 30 preferably have a corresponding tail shape of swallow or wedge as shown in Figures 4 and 8 so that they may be positively engaged in the radial direction out of the cutting device body 13. This arrangement can provide support for the cutting element 30 against radially directed centrifugal forces out during milling operations at very high speeds. Thus, the cutting element 30 is further bearing in the radial direction by the cutting device body 13, thereby reducing the stresses in a fixing screw 60 due to the centrifugal forces acting on a cutting element 30. This provides a more stable machining operation , a more reliable cutting tool 10, and allows the safe use of the cutting tool 10 at very high machining speeds. In some embodiments, the tangential abutment surfaces of member 22 may be interrupted by an element releasing surface 23 (see Figure 15). The specific shape, shape and arrangement of the cutter portion 31, and whether integrally formed with the cutter 30 or attached thereto in a releasable manner, may be the subject of different embodiments. The cutting member 30 may also be a cutting insert or a cartridge with a brazed or otherwise fixed cutting board, or with a replaceable cutting insert. In this case, the cartridge comprises a cartridge receptacle 27 for retaining a cutting insert or a cutting plate 28. The attachment system for connecting this cutting element 30 to the milling cutter body 13 has the reference numeral 14 20 in Figures 1-3, and is shown in more detail in Figures 4-9, while the specific elements of this fastening system are shown in Figures 10-16.

Each cutting device receptacle 14 is associated with a pin bore 40 extending from the front face of cutting device 12, the pin bore 40 having a pin bore axis P which optionally extends in a manner generally parallel to the axis of rotation A. However, the pin hole axis P can also be inclined with respect to the longitudinal axis of rotation A. Each pin hole 40 accommodates a pin 50, having a pin axis N and a shape generally cylindrical exterior (see Figure 10), which conforms in shape and dimensions to the pin bore 40. The pin 50 is made of a material having a second hardness. Typically, the pin 50 is made of steel. Of course, the pin 50 is preferably smaller than the pin hole 40, to facilitate the introduction of the pin 50 into the pin hole 40.

In figures 1 and 2 there is also evident a securing screw 60 for attaching the cutting element 30 to the cutting device body 13, and a adjusting screw 70 for regulating the cutting element 30 with respect to the cutting device body 13 .

Figures 4-7 show the connector system 20. Figure 4 is a front view of the connector system 20 including an end face 55 of the pin 50 and an optionally provided screw or torque transmission device 51 on its face of far end. The torque transmission device 51 is optionally a groove or, in other embodiments, may have other known shapes, such as a crossover point, the shape of a star, hexagonal or square. Figure 4 also shows in more detail the receiving device 15 provided in the cutting device body 13, as well as the cutting element 30 with a cutting insert or cutting insert 33 and its respective cutting edge 32 Figure 5 shows these elements in perspective view. The advantage of a cutting tool 10 according to the present invention is that any threads are avoided in the cutting body 13, since it is made of aluminum, which is a relatively soft metal and more susceptible to bending and wear. Thus, the cutting tool 10 supports higher loads with larger machining speeds without having negative effects. The first hardness of the cutting member 30 and the second hardness of the pin 50 are both greater than the third hardness of the cutting device body 13. Figure 6 is an exploded perspective view of the cutting device receptacle 14, pin 50, bore of pin 40 and cutter 30 of the cutter, together with the set screw 70 and set screw 70. The cutter receptacle 14 comprises a receptacle base 15 and a receptacle attachment aperture formed as a bore of a receptacle attachment hole 16 communicating with the pin bore 40. The receptacle attachment bore 16 has a receptacle attachment bore axis C which extends generally radially outwardly from the pin bore axis P. The receptacle of The cutting device 14 also comprises a receptacle regulation hole 17 which communicates with the pin hole 40. The receptacle regulation hole 17 has a receptacle regulation bore axis B which are and extends generally radially outwardly from the pin bore axis P. Thus, both the receptacle attachment bore 16 and the receptacle bore 17 extend from the receptacle base 15 to an aperture in the pin bore 40. Are oriented so that when the pin 50 is located inside the pin hole 40, the receptacle attachment hole 16 is aligned with a first attachment hole in the pin 50, hereinafter called an attachment hole pin 52 and the receptacle regulating hole 17 is aligned with a second connecting hole, hereinafter called pin adjustment hole 53, in pin 50. The torque transmission device 51 may also serve as an indicator that indicate the direction of the pin fixing hole 52 and the pin adjustment hole 53 relative to the pin hole 40. Alternatively, a separate indicator (not shown), such as a notched one, may be provided on the end face age 55 of pin 50. The securing screw 60 has a first connecting section 61 being typically a threaded portion, a head 62, and an intermediate portion 63 therebetween. The head 62 of the securing screw 60 has an inclined conical head portion 64 (see Figure 7) constituting a securing section tapering toward the intermediate portion 63. According to alternative embodiments, the inclined conical head portion 64 of the securing screw 60 does not have to be conical and may be inclined in a different manner. Similarly, the adjusting screw 70 has a second attachment section 71 being typically a threaded portion, a head 72 and an intermediate portion 73 therebetween. The head 72 of the adjusting screw 70 has an inclined conical head portion 74 constituting a regulating section tapering toward the intermediate portion 73. According to an alternate embodiment, the inclined conical head portion 74 of the adjusting screw 70 does not have to be conical and can be tilted in a different way. Figure 7 is a side cross-sectional view of a cutter body part 13, cutter 30, pin 50, securing bolt 60 and adjusting screw 70. The set screw 60 and the set screw 70 are, and are shown in engagement with the respective pin fixing hole 52 and setting hole 53 provided on the pin 50. Still further, the pin 50 is provided with an elastic portion 54 to allow a slight axial movement to the pin 50. over the pin hole 40 of the pin attachment hole 52 relative to the pin adjustment hole 53. The elastic portion 54, which may be in the form of grooves or recesses, shown generally as 56, is preferably provided for weakening the cross-section between the pin fixing hole 52, found in a securing segment 24 of the pin 50, and the pin adjustment hole 53 found in a setting segment 25 of the pin 50, and to increase the axial resilience between them. The elastic portion 54 does not necessarily have to be provided with grooves 56. Alternatively, the connection between the two pin segments 50 may be implemented by other suitable means which can be formed integrally with the pin 50, or separated thereto. Figure 8 shows the engagement of the securing bolt 60 with the pin fixing hole 52. As shown, the securing bolt 60 passes through a securing element fixing hole 38, thereby keeping the cutting member 30 into the cutting device receptacle 14. Figure 9 shows the engagement of the adjusting screw 70 with the pin adjustment hole 53. In particular, the engagement of the securing screw head 62 and adjusting screw head 72 with its inclined parts having a particular shape can be seen in these figures. The inclination angle β of the inclined conical head portion 74 of the head 72 of the adjusting screw 70 may be less than the inclination angle γ of the inclined conical head portion 64 of the head 62 of the securing screw 60. Although the head end 18 72 of the adjusting screw 70 abuts a rear wall 75 of the receptacle regulation hole 17 of the cutting device body 13, there is preferably a space between the head 72 of the adjusting screw 70 and the cutting device body 13 away from the end of the head 72 of the adjusting screw 70 towards the intermediate portion 73 of the adjusting screw 70. This allows the adjusting screw 70 to be screwed onto the pin 50 to adjust the cutting member 30. That is, the movement into the adjusting screw 70 allows fine axial adjustment of the position of the cutting member 30 relative to the cutting device body 13 when the head 72 of the adjusting screw 70 presses against a concave inclined portion 36 of the cutting element 30.

Figures 10-12 show the pin structure 50 of the preferred embodiment in more detail. The aforementioned elements, namely the groove 51, the pin fixing hole 52 and the pin adjustment hole 53, as well as the elastic part 54 shown as recesses and / or grooves 56 are shown in more detail in these figures. A plurality of single grooves are provided, being arranged alternately. Each single groove 56 preferably extends over 80-98% of the diameter of the pin 50. Further preferably, each single groove 56 extends over 90-95% of the pin diameter 50. Typically, there are provided between two to five grooves 56. Still typically, three grooves 56 are provided.

Figures 13-16 show an embodiment of the cutting member 30 in the form of a cartridge. As can be seen in Figures 13 to 16, the cutting member 30 has two opposing ends. Near a first end 19 is a cut portion 31, which may be formed either as a cutting plate or as a cutting insert 33. In the case of a cutting plate, the plate is preferably brazed in the cartridge. In the case of a cut insert, it is preferably indexable and secured to the cartridge in a releasable manner. The cutting portion 31 has at least one cutting edge 32. According to a specific arrangement of the cutting edge 32, it is provided with four cutting edge portions. A first cutting edge portion 41 functions as a peripheral cutting edge and extends generally parallel to the longitudinal axis of rotation A when the cutting element 30 is mounted in a cutting device receptacle 11 in the cutting device body cut portion 13. A second cutting edge portion 42 extends inwardly from the first cut edge portion 41 and obliquely relative thereto. A third cut edge portion 43 extends inwardly from the second cut edge portion 42 and obliquely relative thereto and with respect to the longitudinal axis of rotation A. A fourth cut edge portion 44 extends inwardly from the third cutting edge portion 43 and is generally perpendicular to the longitudinal axis of rotation A. A cutting section 37 is at or about the cutting portion 31 of the cutting element 30. At the second end of the cutting element 30, opposite the cutting section 37, the cutting member 30 is provided with a regulating section 35 which can be seen in Figure 15. The adjustment section 35 has a concave inclined portion 36, to enable the screw (not shown in Figures 13-16) engages the concave inclined portion 36 in a predefined shape and to enable the positioning of the cutting member 30 to be adjusted after the other input of the adjusting screw 70 on the pin 50. The for 20 between the tangential abutment surfaces 22 of the cutting member 30 can extend between the cutting section 37 of the cutting member 30 and its concave adjustment section.

Preferably, the concave inclined portion 36 is formed by a plurality of inclined elements 45. The arrangement of the inclined segments 45 allows to define the contact zone between the adjusting screw 70 and the concave inclined portion 36. Thus, the contact zone is defined so that the inclined conical head portion 74 of the adjusting screw 70 applies a pressure force W against the concave inclined portion 36 of the regulating section 35, in a general direction shown by the arrow 26 in Figure 15, to move the cutting element 30 in an axial direction relative to the cutting device body 13. At the same time, the pressure direction ensures that the spaced apart tangential abutment surfaces 22 of the cutting element 30, which are spaced apart by the element releasing surface 23, remain in firm contact with the corresponding receptacle tangential abutment surface 21 which tangentially supports the cutting member 30 c other cutting forces directed tangentially therein applied during machining. Thus, it is advantageous that the force W applied by the inclined conical head part 74 of the adjusting screw 70 in the concave inclined portion 36 is not parallel to the tangential abutment surfaces of the element 22 on both sides of the cutting element 30, transversely thereto, as shown by the arrow 26.

As shown in Figure 15 the concave inclined portion 36 is spaced apart from the cutting element attachment hole 36 which is provided with its own inclined surface 34. In Figures 15 and 16, the inclined surface 34 of a bore securing element 38 is shown for engagement of the respective head 62 of the securing screw 60 (not shown in Figures 15 and 16). Figure 16 further illustrates the radial abutment surface 39 on a base of the cutting member 30. When the cutting member 30 is mounted in the cutting device receptacle 14 of the cutting device body 13, the radial abutment surfaces 39 of the cutting element cutter 30 abut the receptacle base 15 of the cutter receptacle 14.

As shown in Figures 4, 14 and 16, the cutting member 30 is optionally provided with two bevelled surfaces 47 extending between the tangential abutment surfaces 22 and the radial abutment surfaces 39 of the cutting member 30. As bevelled surfaces 47 allow adequate clearance of the cutting member 30 when it rests inside the cutting device receptacle 14 in the cutting device body 13. The cutting element 30 is preferably secured in a releasable manner, is disposed in the cutting device receptacle 14 of the cutting device body 13 by the securing screw 60 which passes through the cutting element attachment hole 38 through the receptacle receiving hole 16 and is screwed into the securing hole of the pin 52. The adjusting screw 70 passes through the receptacle regulation hole 17 and is screwed into the pin adjustment hole 53. The head 72 of the adjustment hole 70 in to the concave inclined portion 36 of the cutting member 30.

Figures 17-23 further illustrate the design and alignment of the pin hole 40 and respective cutting device receptacle 14, both provided in the cutting device body 13. Preferably, there is more than one pin hole 22 40 and cutter receptacle 14 in the cutting device body 13. Optionally, there may be a relatively large number of pin holes 40 and associated cutter receptacles 14, as is shown, for example, in Figure 1. Returning from Again to Figure 21, it is clear that preferably these receptacle holes 16, 17 are generally parallel to allow for the use of the receptacle bores 16 and 17, that the adjusting screw 70 (not shown in the figure) properly adjusts the cutting member 30 (not shown in the figure) in the cutter receptacle 14 in a defined shape 1a, after more engagement of the adjusting screw 70 on the pin 50. The receptacle regulation hole 17 has segments corresponding preferably to the segments of the adjusting screw 70: a cylindrical section 18 adjacent the peripheral surface of the cutting device 11 and a conical section 19 which converges to the pin hole 40. A top view of the engagement of the already described elements, in particular of the fastening screw 60, is shown in Figure 19. A preferred orientation of the fastening and socket adjustment holes 16 , 17 is further shown in Figures 22 and 23.

As shown in Figure 19, the receptacle attachment bore axis C is inclined with respect to a radial direction R of the cutting tool 10 at a bore axis inclination angle α. The receptacle attachment bore axis C is inclined rearwardly with respect to a direction of rotation 46 of the cutting tool 10. The inclination angle α of the bore axis ensures that the cutting element 30 will be pressed positively and tangentially against the the cutting device receptacle 14 of the cutting device body 23, whereby a tangential abutment surface of the element 22 on one side of the cutting element 30 will abut against the corresponding tangential abutment abutment surface 21. In addition, the force the tangential cutting force F applied to the cutting insert 28 during machining tends to force the same tangential abutment surface 22 of the member 22 against its corresponding tangential abutment surface 21, thus aiding in a firm engagement of the cutting member 30 in the inside of its cutting insertion receptacle 14. The assembly of the cutting tool 10 will now be described with reference to Figures 1 to 23. The assembly comprises the steps of: 1- Inserting the pin 50 into the pin hole 40. 2. Align the pin fixing and adjusting holes, 52, 53 with the securing and adjustment holes receptacle, 16, 17.

This step is only executed when necessary. For example, if after insertion of the pin 50 into the pin hole 40 the pin fixing and adjusting holes 52, 53 are already aligned with the securing and adjustment holes 16, 17, then this step is not performed. Further, if the pin 50 and the pin hole 40 are not cylindrical and the rotational rotation between them is avoided, then this step is not performed either. 3- Introducing the cutting element 30 axially rearwardly from the front face of cutting device 12 into the cutting device receptacle 14 of the cutting device body 13, so that the radial abutment surfaces 39 of the cutting element 30 and the tangential abutment surfaces of member 22 slide respectively against the receptacle base 15 and the tangential receptacle abutment surfaces 21. 4. Insert the securing screw 60 through the securing member cutting hole 38, through of the receptacle attachment hole 16, and threadably engaging the securing screw 60 in the securing hole 52 without definitive tightening. 5- Insert the adjusting screw 70 underneath the concave inclined portion 36 of the cutting member 30 through the receptacle regulation hole 17, and partially and threadably engage it in the pin adjustment hole 53. 6. Continue to tighten the adjusting screw 70 so that its head 72 is supported against the cylindrical section 18 of the receptacle regulation hole 17. At the same time, the inclined conical head portion 74 of the adjusting screw head presses axially forward against the the concave inclined portion 36 of the cutting member 30. 7. Continue tightening the adjusting screw 70 so that the cutting member 30 deforms axially forwardly with respect to the cutting device body 13 until the cutting member 30 reaches its axial position is retracted relative to the other cutting elements in the cutting device body 13, so that the cutting edges 32 of all the cutting elements 30 are the same level. 8- Definitely tighten the securing screw 60 to tightly hold the member 30 inside the cutter receptacle 14. 25 9-

Finally, tighten the adjusting screw 70.

If it is necessary to move the cutter 30 axially rearward, the step 7 may be followed by the step of loosening the set screw 70, simply allowing the cutter 30 to be displaced axially back. If the elastic part 54 connecting between the two segments of the pin 50 is tensioned, it will retract and thus the cutter 30 will move axially back.

Figures 24-25 illustrate an alternate embodiment of a second pin 150 that may be used with the connector system 20. The second pin 150 is a split pin comprising two segments. A first segment is a securing segment 124 and a second segment is a regulating segment 125. The securing segment 124 of the split pin 150 has a pin fixing hole 152 and the regulating segment 125 of the split pin 150 has a bore The split pin 150 allows a slight axial movement of the adjusting segment 125 of the split pin 150 relative to its attachment segment 124 when the adjusting screw 70 (not shown in Figures 24-25) is screwed onto the pin adjustment hole 153. The securing segment 124 may be coupled to the adjustment segment 125 in any suitable shape (not shown) which will limit the relative rotation therebetween and allow the alignment of pin adjustment hole 153 with the bore The locking segment 124 may be coupled to the adjustment segment 125, for example, in a spigot and housing arrangement, a T-slot, a spring, a borrac ha, a dovetail arrangement, a pin and the like. Figure 28 shows a connector system mounted in accordance with any one of the embodiments of the invention, a connector system 220 or a connector system 320, which will now be described in more detail. The attachment system 220 and the attachment system 320 both have a pin 250, a cutter 230, a set screw 260, and a set screw 270, all of which are similar to the respective components of the attachment system 20 described above. The securing screw 260 and the adjusting screw 270 are releasably secured to the cutter member 230 in the receptacle and are engaged with the pin 250 in a manner similar to that described in the connector system 20. The connector system 220 , as shown in Figure 26, further has a cutter receptacle 214 and an associated pin hole 240 generally similar to the cutter receptacle 14 and pin hole 40 in the fastening system 20. The wiper device receptacle section 214 is optionally in the form of a dovetail similar to the cutter receptacle 14 described above and accommodates the cutter 230. The cutter receptacle 214 comprises a receptacle setting hole 217 which communicates with the pin hole 240 and is generally similar to the receptacle regulation hole 17 described above. However, the receptacle attachment aperture, rather than being formed as a bore, such as the receptacle attachment hole 16 described above, is in the form of a receptacle attachment groove 216. The receptacle attachment groove 216 communicates with the pin hole 240 and extends from a receptacle base 215 to the pin hole aperture 240. The receptacle attachment groove 216 also extends axially forward from a base 27 of securing aperture 229 to a leading face of cutting device 212. The receptacle attachment groove 216 and the receptacle regulating hole 217 accommodate the securing screw and the adjusting screw, respectively, generally similar to the accommodation of the receptacle attachment hole 16 and bore for setting the receptacle 17 of the securing screw 60 and the adjusting screw 70 respectively described above. Thus, in the attachment system 220, the securing screw 260 is accommodated in the receptacle attachment groove 216 while the adjusting screw 270 is accommodated in the receptacle regulation hole 217. The attachment system 320 shown in Figure 27 further has a cutter receptacle 324 and an associated pin hole 340 generally similar to the cutter receptacle 14 and pin bore 40 in the connector system 20. The cutter receptacle 314 is optionally in the shape of a tail of swallow similar to the cutter receptacle 14 described above, and accommodates the cutter member 230. The cutter receptacle 314 is devoid of a separate receptacle setting hole, such as the receptacle setting hole 17. The aperture is an elongate receptacle attachment groove 316 which communicates with the pin bore 340 and extends from a receptacle base 315 for the aperture of the pin bore 340. The receptacle attachment groove 316 also extends axially forward from a securing aperture base 375 to the front face of a cutting device 212. The aperture base of attachment 375 is generally similar to the back wall 75 of the receptacle regulation hole 17 described above. In the connector system 320, the securing screw 260 is housed in the elongate receiving attachment groove 316, such as the securing screw 260 in the connector system 220.

A connection system 420 according to another embodiment of the invention is illustrated in Figures 29-30. The attachment system 420 has a cutter member 430, a set screw 460, a set screw 470, and a cutter receptacle 414 that optionally has the dovetail shape and accommodates the cutter member 430 , a receptacle attachment frond 416 and a receptacle regulating hole 417, all of which are generally similar to the respective components of the attachment system 20 described above. A pin bore 440 having a pin bore axis P4 is associated with the cutting device receptacle 414 of the attachment system 420, as is described with respect to the attachment system 20. The attachment system 420 further comprises a friction screw 480 and a friction bore 478 which is associated with the cutting device receptacle 414 adjacent and generally parallel to the receptacle regulation bore 417. The friction bore 478 has a frictionally bore axis D extending radially out from the pin hole axis P4. The friction hole 478 extends from the peripheral surface of cutting device 411 to an opening in the pin hole 440.

Each pin hole 440 accommodates a pin 450 shown in greater detail in Figure 31. The pin 450 has a pin fixing hole 452 and a pin adjustment hole 453, as well as an elastic portion 454 generally similar to the respective components described above to the pin 50. The pin 450 further comprises a pinched bore 457 adjacent to the pin setting hole 453. All three pin bores are oriented so that when the pin 450 is located in the interior of the pin bore 440 , all of the receptacle holes, namely the receptacle attachment hole 416, the receptacle regulation hole 417 and the friction hole 478 are respectively aligned with the pin fixing hole 452, pin adjustment hole 453 and bore with pin friction 457 on pin 450. The securing screw 460 and adjusting screw 470 detachably secures the cutting member 430 into the cutter receptacle 414 and is engaged on the pin 450 in a manner similar to that described for the attachment system 20. The friction screw 480 may have three main sections: a friction screw head 482, an intermediate portion and a threaded portion that engages the bore with friction bolt 457. In addition, an optional format of the friction bore 480, more specifically the friction screw head 482, is derivable from Figure 31. The engagement of the friction screw 480, and in particular the screw head with friction 482 can be seen in Figures 29-31. The friction screw head 482 has a peripheral section 483 which couples the cylindrical section 418 of the socket adjustment hole 417 when the friction screw 480 engages the bore 478 and the pinched bore 457. adjusting screw 470 engages the pin 450 to regulate the cutting member 430, a set screw head 472 abuts the peripheral screw head peripheral section 483. Accordingly, in the case of a set screw head being made of a material harder than the material of the cutting device body, including an inner part of a regulation hole, the inner wall is not affected by frictional contact with the adjusting screw head. 30

In other embodiments of the invention (not shown) a cutting tool may have at least one receptacle having a friction bore and a friction screw, as is described for the cutter receptacle 414 and receptacle attachment groove, similar to both the receptacle attachment grooves 216, 316 described with respect to Figures 26 and 27. Figure 33 shows a non-rotating cutting tool 510 schematically shown which can be used in turning, separating and grooving according to another embodiment of the invention. The cutting tool 510 has a cutter body 513 having a longitudinal axis L defining a front to rear direction and a pair of opposing cutting peripheral surfaces 511, extending rearwardly from the front face of cutter 512. At least one attachment system 520 is located at a forward end of cutter body 513. A cutter device receptacle 514 of attachment system 520 opens to the front face of cutter 512 and to one of peripheral surfaces of cutter 511. Associated with cutter receptacle 514 is a pin hole 540 extending rearwardly from cutter face front 512. Pin hole 540 has a pin hole axis p5 which optionally extends in a generally parallel manner to the longitudinal axis L. However, the pin bore axis P5 may also be inclined towards the longitudinal axis L of the body of the cutting device 513. The attachment system 520 is generally similar to the attachment system 20 described above and includes a cutter 530, a set screw 570 and a set screw 570. A pin 550 may be similar either to the pin 50 described with respect to the attachment system 20, or to the split pin 150 described with respect to Figures 24 and 25. However, in other embodiments of the invention, any of the attachment systems 220, 320, 420 described above.

Although the present invention has been described with a certain degree of particularity, it will be understood that various changes and modifications may be made without departing from the scope of the invention, as is claimed below.

Lisbon, May 15, 2013. 32

Claims (13)

A cutting tool (10, 510) comprising: a cutting device body (13, 513) having a longitudinal axis (A, L), the cutting device body being rotatable (13) or non-rotating ( 513), and comprising: a front face (12, 212, 512) and a peripheral surface (11, 411, 511) extending rearwardly from the front face and at least one pin hole (40, 240, 340 , 440, 540) formed in the cutting device body; and the at least one cutting device receptacle (14, 214, 314, 414, 514) disposed in the cutting device body, the cutting device receptacle having a receptacle attachment aperture (16, 216, 316, which communicates with the at least one pin bore; a cutting element (30, 230, 430, 530) located in the at least one cutting device receptacle, the cutting element comprising a fixing hole (38); a pin (50, 150, 250, 450, 550) located in the at least one pin bore, the pin comprising a first bore (52, 152, 452) and a second bore (53, 153, 453) , the first attachment hole and the second attachment hole being optionally threaded; 1 is a securing screw (60, 260, 460, 560) having a first connecting section (61) which engages the first pin connecting hole, the securing screw securingly releasable the cutting element cutting device body; a set screw (70, 270, 470, 570) having a second connecting section (71) engaging the second connecting hole of the pin ', the adjusting screw facing the cutting element; in which the cutting element (30, 230, 430, 530) has at least one inclined part (36) which is spaced apart from the fixing hole (38), optionally at least one inclined part being arranged in a concave adjustment section ( 35) of the cutting member on the opposite side of a cutting section (37) of the cutting member; and the adjusting screw (70, 270, 470, 570) has an inclined head portion (74) which engages said at least one inclined portion (36) of the cutting member; characterized in that the pin hole is formed in the front face of the cutting device body, in that the cutting device receptacle is disposed on the peripheral surface of the cutting device body; and in that the inclined head portion (74) engages either the receptacle regulation hole (17, 217, 417) which is formed with a receptacle attachment hole (16, 216, 316, receptacle, or with a friction screw (480) of the cutter body (13, 513), so as to adjust the cutter member to a position defined relative to the cutter body (13, 513). A cutting tool (10, 510) according to claim 1, wherein: the pin (50, 150, 250, 450, 550) is divided into at least two segments (24, 25; 124, 125). A cutting tool (10, 510) according to claim 1, in which: the pin (50, 150, 250, 450, 550) has an elastic part (54, 454) situated between the first connecting hole 52, 152, 452) and the second attachment hole (53, 153, 453). Cutting tool (10, 510) according to claim 3, in which: the elastic part (54, 454) comprises at least one recess or a groove (56) situated between the first connecting hole (52, 152 , 452) and the second connecting hole (53, 153, 453). A cutting tool (10, 510) according to claim 1, in which: an end face (55) of the pin has at least one torque transmission device (51) configured to rotate the pin (50, 150, 250, 450, 550) and to align the first and second attachment holes (52, 152, 452; 53, 153, 453) of the pin with the receptacle attachment aperture, the torque transmission device optionally being an indicator indicating the direction of the connection holes. A cutting tool (10, 510) according to claim 1, in which: the pin (450) further comprises a third bore (457); the cutting device body comprises a friction bore (458) extending from the peripheral surface of the cutting device body toward the pin bore; and a friction screw (480) engaging the friction bore and the third bore, and optionally the adjusting screw (70, 270, 470, 570), has a set screw head (72) that abuts the a peripheral section (483) of the friction screw head (482). A cutting tool (10, 510) as claimed in claim 1, wherein: the cutting member (30, 230, 430, 530) comprises either a cutting insert (28), a cutting blade (33 ) or a cartridge (30) intended for a cutting insert or a cutting board, optionally the cartridge comprises a cartridge receptacle (27) suitable to retain a cutting insert or a cutting plate. Cutting tool (10, 510) according to claim 1, in which: the cutting element (30, 230, 430, 530) is in the form of a dovetail. A cutting tool (10, 510) according to claim 8, wherein: the at least one cutting device receptacle (14, 214, 314, 414, 514) is provided with tangential receptacle abutment surfaces ( 21) having the dovetail shape engaging a dovetail shape of the tangential abutment surfaces of the cutting element member (22); and in a mounted position of the cutting tool, a tangential abutting surface of the at least one cutting member element abuts a corresponding tangential abutment surface (21). A cutting tool (10, 510) according to claim 1, wherein: the cutting member (30, 230, 430, 530) is made of a material having a first hardness; The pin (50, 150, 250, 450, 550) is made of a material having a second hardness; and the cutting device body (13, 513) is made of a material having a third hardness; in which: the first hardness and the second hardness are both greater than the third hardness. A cutting tool (10, 510) as claimed in claim 1, wherein: the adjusting screw (70, 270, 470, 570) abuts an inclined portion (36) of the cutting member such that a (W) applied by the adjusting screw in the cutter member is transversely directed (26) relative to the tangential abutment surfaces of the member (22). A cutting tool (10, 510) according to claim 1, in which: a receptacle holder bore axis (C) is inclined from a radial direction (R) of the cutting tool at an inclination angle of the bore axis (a), optionally the receptacle holding bore axis (C) is inclined rearwardly relative to the rotational direction (46) of the cutting tool. 6 A method for assembling a cutting tool (10, 510) comprising the steps of: (a) inserting a pin (50, 150, 250, 450, 550), having a pin fixing hole , 452) and a pin adjustment hole (53, 153, 453) in a pin hole (40, 240, 340, 440, 540) that extends axially rearwardly from a front face of a cutting device (12, 212, 512) of a cutting device body (13, 513); (b) inserting a cutting element (30, 230, 430, 530) axially rearwardly from the front face of cutting device into a cutting device receptacle (14, 214, 314, 414, 514) of the body (11, 411, 511) of the cutting device body, in such a way that the radial abutment surfaces (39) of the cutting element and the cutting surfaces (22) of the cutter element slide respectively against a receptacle base (15) and tangential receptacle abutment surfaces (21); (c) inserting a securing screw (60, 260, 460, 550) through a securing hole of the cutting element (38), through a receptacle attachment aperture (16, 216, 316, cutter receptacle, screw the attachment screw into the pin attachment hole without tightening the attachment screw; (D) introducing a set screw (70, 270, 470, 570) under a concave inclined portion (36) of the cutting member through the receptacle attachment aperture, and partially engaging it by screwing into the bore of pin regulation; (e) continuing to tighten the adjusting screw in such a way that its head (72, 472) is supported against a cylindrical section (18, 418) of the receptacle holding aperture and, simultaneously, an inclined head portion ) of the adjusting screw head generally lies axially forwardly against the concave inclined portion (36) of the cutting element; (f) continuing the tightening of the adjusting screw in such a way that the cutting element moves axially forward with respect to the cutting device body until the cutting element reaches its required axial position with respect to other cutting elements in the cutting body in such a way that the cutting edges (32) of all the cutting elements are at the same level; (g) finally tightening the securing screw so as to hold the severing member tightly inside the receptacle; (h) firmly tighten the adjusting screw; (i) optionally, after insertion of the pin, aligning the pin holes with the receptacle attachment aperture; (j) optionally loosening the adjusting screw and moving the cutting element axially back. 8